Dental appliance.



No. 767,743. PATENTED AUG. 16, 1904.. J. D. FORD.

DENTAL APPLIANCE.

APPLICATION FILED DEC. 2, 1903.

N0 MODEL.

Patented. August 16, 1904.

PATENT OFFICE.

JAMES D. FORD, OF SOMERSET, OHIO.

DENTAL APPLIANCE.

SPECIFICATION forming part of Letters Patent N0. 767,743, dated August 16, 1904. Application filed December 2, 1903. Serial No. 183 463. (N0 model.)

To all whom if may concern.-

Be it known that I, JAMEs D. FORD, a citizen of the United States, residing at Somerset, in the county of Perry and State of Ohio, have invented new and useful Improvements in Dental Appliances, of which the following is a specification.

My invention relates to new and useful improvements in dental appliances; and its object is to provide a simple, inexpensive, and compact device for preparing gold-foil for filling teeth.

Another object of the invention is to provide a device which is so constructed as to uniformly roll or condense the foil and produce a flat compact strip which can be readily inserted in a cavity or between teeth and which will require but slight separation of the teeth in order to permit its insertion.

The invention consists in the novel construction and combination of parts hereinafter more fully described and claimed, and illustrated in the accompanying drawings, showing the preferred form of my invention, and in which' Figure l is a perspective view of the. device, the parts thereof being shown disconnected. Fig. 2 is a longitudinal section through the appliance, the slide being shown in position prior to the compressing operation; and Fig. 3 is a similar view showing the posi;

tion of the slide at the completion of the com pressing operation.

Referring to the figures by numerals of reference, 1 is a base-plate having flanges 2 at the side edges thereof, and 3 is a tray having an inwardly-extending flange 4: at one edge,

which is adapted to extend under the front edge of the base-plate l and hold the tray in position thereon. A shoulder 5 is formed at the rear edge of the tray 3 and extends from side to side thereof, and this shoulder is adapt-' ed to form a bearing for a spring-plate 6,

which extends under and is formed integral able manner, preferably by means of an intermediate flange 9, adapted to slide upon the base-plate 1 in rear of the tray 3. This flange is bent upon itself, as shown at 10, so as to bring the fixed end of the spring-plate 6 at a point suflficiently removed from the lower edge of the flange 9 to permit the shoulder 5 to abut thereagainst without removing the flange 9 from the base-plate.

In using the device herein described a sheet of gold-foil is placed upon the tray 3, with one edge against shoulder 5. Said tray is then inserted between the side flanges 2 of the' The strip formed in this manner is smooth and compact and can be readily utilized for filling teeth. It will be understood that trays of different sizes can be employed, and the trays can have shoulders 5 of different heights, whereby the resultant strips of gold will be of predetermined sizes. The strip 6 tends to press the gold-foil downward as said foil is moved toward the shoulder 5, and therefore the material is tightly packed downward, as

well as against the shoulder.

In the foregoing description I have shown the preferred form of my invention; but I do not limit myself thereto, as I am aware that modifications may be made therein without departing from the spirit or sacrificing any of the advantages thereof, and I therefore reserve the right to make such changes as fairly fall within the scope of my invention.

1 have not herein claimed, broadly, a goldleaf condenser comprising two sections slid- 9 able relatively and having opposing shoulders and means for varying the exposed or operating surface of one of the shoulders, nor yet the particular construction, including the spring packing-plate, whereby the exposed or working surface of one shoulder may be varied by the operation of the other shoulder, as this invention forms the subject-matter of a separate application for patent filed by me May 16, 190 Serial No. 208,14t.

Having thus described the invention, what is claimed as new is 1. In a device of the character described, the combination with a base-plate having guide-flanges; of a tray detachably connected to the base-plate and having an integral shoulder atone edge, a slide mounted upon the tray and base-plate, and a spring packingplate integral with the slide and normally bearing upon the shoulder.

2. In a device of the character described, the combination with a base-plate having guide-flanges; of a tray detachably mounted upon the base-plate and between the flanges, said tray having a transversely-extending shoulder at one edge, a slide mounted upon the base-plate and extending over the shoulder, a scraping-flange integral with the slide and adapted to bear upon the tray, and a spring packing-plate integral with the slide and normally bearing on the shoulder.

3. The combination with a base-plate having flanges at the sides thereof; of a tray upon the base-plate and between the flanges, an inwardly-curved flange integral with the tray and engaging one edge of the base-plate, a shoulder integral with the tray and extending transversely thereof, a slide mounted upon the base-plate and extending across the shoulder, a scraping-flange integral with the slide and adapted to bear on the tray, and a spring packing-plate integral with the slide and normally contacting with the shoulder.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES D. FORD.

WVitnesses:

GnAs. FREDERICK JOHNSTON, HOMER C. WI-IITMER. 

